[INFO] fetching crate tuple_utils 0.3.0...
[INFO] checking tuple_utils-0.3.0 against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] extracting crate tuple_utils 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tuple_utils 0.3.0 on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tuple_utils 0.3.0
[INFO] finished tweaking crates.io crate tuple_utils 0.3.0
[INFO] tweaked toml for crates.io crate tuple_utils 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ec0830c69d1bacdf20917d1e57fe7cc3cc347f26abc8a3e3efc9211e6367141
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3ec0830c69d1bacdf20917d1e57fe7cc3cc347f26abc8a3e3efc9211e6367141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ec0830c69d1bacdf20917d1e57fe7cc3cc347f26abc8a3e3efc9211e6367141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec0830c69d1bacdf20917d1e57fe7cc3cc347f26abc8a3e3efc9211e6367141", kill_on_drop: false }`
[INFO] [stdout] 3ec0830c69d1bacdf20917d1e57fe7cc3cc347f26abc8a3e3efc9211e6367141
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 52400bf8b8db4e08fb9efc8dad2874d07cbf7989402f0b861bea54fe1abfebc9
[INFO] running `Command { std: "docker" "start" "-a" "52400bf8b8db4e08fb9efc8dad2874d07cbf7989402f0b861bea54fe1abfebc9", kill_on_drop: false }`
[INFO] [stderr]     Checking tuple_utils v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:25:27
[INFO] [stdout]    |
[INFO] [stdout] 25 |               type Output = ( $( $from ,)*  T);
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 61 | / for_each_prefix!{
[INFO] [stdout] 62 | |     tuple_impl,
[INFO] [stdout] 63 | |     [],
[INFO] [stdout] 64 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:29:38
[INFO] [stdout]    |
[INFO] [stdout] 29 |               fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 61 | / for_each_prefix!{
[INFO] [stdout] 62 | |     tuple_impl,
[INFO] [stdout] 63 | |     [],
[INFO] [stdout] 64 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:25:27
[INFO] [stdout]    |
[INFO] [stdout] 25 |               type Output = ( $( $from ,)*  T);
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 61 | / for_each_prefix!{
[INFO] [stdout] 62 | |     tuple_impl,
[INFO] [stdout] 63 | |     [],
[INFO] [stdout] 64 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:29:38
[INFO] [stdout]    |
[INFO] [stdout] 29 |               fn append(self, x: T) -> ( $( $from ,)*  T) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 61 | / for_each_prefix!{
[INFO] [stdout] 62 | |     tuple_impl,
[INFO] [stdout] 63 | |     [],
[INFO] [stdout] 64 | |     [(T0), (T1), (T2), (T3), (T4), (T5), (T6), (T7), (T8), (T9), (T10), (T11), (T12), (T13), (T14), (T15),]
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "52400bf8b8db4e08fb9efc8dad2874d07cbf7989402f0b861bea54fe1abfebc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52400bf8b8db4e08fb9efc8dad2874d07cbf7989402f0b861bea54fe1abfebc9", kill_on_drop: false }`
[INFO] [stdout] 52400bf8b8db4e08fb9efc8dad2874d07cbf7989402f0b861bea54fe1abfebc9